55 results about "Continuous curvilinear capsulorrhexis" patented technology

An intraocular lens for use in extracapsular cataract extraction has a haptic pat that surrounds the optical pat of the lens and further contains a groove of such shape to accommodate the anterior and posterior capsules of the lens bag after anterior capsulorhexis, extracapsular cataract extraction and posterior capsulorhexis. The lens is preferably inserted in a calibrated, circular and continuous combined anterior and posterior capsulorhexis, slightly smaller than the inner circumference of the groove as to induce a stretching of the rims of the capsular openings. This new approach is believed to prevent the appearance of secondary opacification of the capsules, allows a very stable fixation of the intraocular lens and ensures a tight separation between the anterior and posterior segment of the eye. This new principle of insertion is called the bag-in-the-lens technique, in contrast with the classical lens in-the-bag technique.

Systems and methods are described for cataract intervention. In one embodiment a system comprises a laser source configured to produce a treatment beam comprising a plurality of laser pulses; an integrated optical system comprising an imaging assembly operatively coupled to a treatment laser delivery assembly such that they share at least one common optical element, the integrated optical system being configured to acquire image information pertinent to one or more targeted tissue structures and direct the treatment beam in a 3-dimensional pattern to cause breakdown in at least one of the targeted tissue structures; and a controller operatively coupled to the laser source and integrated optical system, and configured to adjust the laser beam and treatment pattern based upon the image information, and distinguish two or more anatomical structures of the eye based at least in part upon a robust least squares fit analysis of the image information.

A tensioning device for attaching to the anterior capsule of an eye, and accommodative intraocular lens systems employing the device. The tensioning device includes a biocompatible, elastically reconfigurable ring for restoring at least a portion of the anterior capsule centripetal forces lost by capsulorhexis. The tensioning device also includes a plurality of penetrators configured for attaching the ring to the anterior capsule. The plurality of penetrators is biocompatible with the eye and partially embedded in a part of the ring configured for facing the anterior capsule.

An accommodative lens assembly includes a lens body defining an optic lens, a haptic system, and a wing. The lens body is formed and implanted into an eye in a disaccommodative configuration. The haptic system includes one or more haptics that support the optic lens and transmits forces from an anatomical structure such as a ciliary body of the eye, causing the optic lens to deform into an accommodative configuration. In order to stabilize the optic lens so that the optic lens is not displaced from its implantation site, the wing anchors the optic lens within an anterior capsulorhexis of the capsular bag such that the transmitted forces that deform the optic lens during accommodation do not also displace the optic lens from its implanted position. When implanted, the optic lens is anterior to the capsular bag.

A method of suturing the lens capsule of the eye in the event of accidental rupture thereof or to create a valve and/or to close a capsulorhexis by laser-induced welding onto the capsule's surface of a flap of biocompatible biological tissue prepared so as to be optically absorbent at the wavelength of the laser being used for welding. The method is suitable for use in so-called Phaco-Ersatz or “lens refilling” ophthalmologic surgery. Welding is desirably performed using laser devices that comprise a laser generator and a fiberoptic system for conveying the laser beam, complete with an applicator handpiece suitable for use in welding the flaps onto the lens capsule in a liquid environment. The handpiece is shaped so as to exert moderate pressure on the tissues to be welded with the free end of the optic fiber.

The present invention relates generally to the field of cataract surgery and more particularly to methods and apparatus for performing a capsulorhexis. This invention is in the field of medical devices. The present invention relates to a device constructed from metals, polymers or other materials that are amenable to precise surface modifications and methods for its use, wherein (1) the device assists in capsulorhexis and (2) a patterned surface having milli-, micron-, and/or nano-sized micropatterning characteristics that imparts surface stabilizing and self-adhesive properties.

An intraocular lens that is capable of being inserted through a micro-incision includes an optic having an anterior and a posterior surface and a plurality of projections extending from the anterior and posterior surfaces. The anterior and posterior surfaces include a recess. The optic is implanted such that a rim of the capsulorhexis is disposed in the recess such that the plurality of projections grip the capsular bag.

The CCUTTER is an innovative ophthalmologic surgical instrument that greatly facilitates the performance of cataract surgery. Cataract surgery is the most frequently performed surgery in the United States, with over one million cataract surgeries done each year. A cataract is a clouding of the eye's internal lens, which interferes with the individual's ability to see clearly. During surgery, a continuous circular tear (called capsulorhexis) is made in the anterior capsule of the crystalline lens of the eye, and the front surface of the cataract is opened to allow access to the clouded tissue inside. The cloudy portion is then removed, leaving the thin clear back surface of the lens (called the posterior capsule) in place. A lens implant is then placed in the shell of the natural lens, and the incision is closed. The CCUTTER is designed to improve the predictability and consistency of performing the capsulorhexis during cataract surgery.

A mechanical surgical device and device are provided for allowing the user to form a circular incision in an intraocular tissue, such as the anterior capsule of the eye, as part of an anterior capsulorhexis. Unlike the prior art, the device of the present invention is comprised of mechanical components, where the mechanical components drive a cutting member in a motion around a fixed pivot point to perform a continuous curvilinear capsulorhexis. Where the pivot point is the location of the slit incision in the cornea or the sclera through which the cutting tip is inserted to access the anterior capsule bag. The present device is hand held, compact and relatively light in weight. The present capsulorhexis device requires only a 1 mm incision in the corneal or scleral tissue. The present invention does not require the manual skill of the user to perform a circular incision.

A mechanical surgical device and device are provided for allowing the user to form a circular incision in an intraocular tissue, such as the anterior capsule of the eye, as part of an anterior capsulorhexis. Unlike the prior art, the device of the present invention is comprised of mechanical components, where the mechanical components drive a cutting member in a motion around a fixed pivot point to perform a continuous curvilinear capsulorhexis. Where the pivot point is the location of the slit incision in the cornea or the sclera through which the cutting tip is inserted to access the anterior capsule bag. The present device is hand held, compact and relatively light in weight. The present capsulorhexis device requires only a 1 mm incision in the corneal or scleral tissue. The present invention does not require the manual skill of the user to perform a circular incision.

A method of selecting an intraocular lens, where the size, shape or overlap of capsulorhexis is used in addition to other factors to select the properties of the intraocular lens implanted in the eye to achieve certain refractive outcome.

An intraocular device that includes a base member is provided. The device can be an accommodation intraocular lens device with the base member and a power changing lens. The base member comprises an annular haptic that surrounds a central cavity having an open end. The power changing lens is configured to fit within the central cavity. The haptic comprises one or more projections, e.g., tabs that hold another device in position. In the case of the accommodating intraocular lens device, the other device is the power changing lens. The base member and the power changing lens are maintained separate until assembly in the eye of the patient. During assembly, the base member is advanced into the capsular bag of a patient through a capsulorhexis and oriented such that the open end of the central cavity faces the cornea. Subsequently, the power changing lens is advanced into the central cavity through the capsulorhexis. The one or more tabs are placed anterior of the power changing lens to secure the power changing lens within the cavity.

A method for refilling a lens of an eye or increasing the elasticity of a lens of an eye includes removing a central portion of the lens core through the eye's cornea, a capsulorhexis in the eye's lens capsule and a gullet extending at least partially through the cortex of the lens. The lens is then refilled with a synthetic lens material. Sufficient lens core is left in place so that the synthetic material is not in contact with a lens capsule of the eye. The synthetic material used for refilling may be selected and may be formed in a shape and thickness so as to affect the refractive characteristics of the lens. An endocapsular lenticule may be inserted in the lens to affect the refractive characteristics of the lens.

A device and method for maintaining the shape and/or position of an opening formed by a capsulorhexis.

A device for performing a capsulorhexis incision inserted via a small wound cut in the corneal or sclera tissue. The device includes a motorized cutting element and a handle The motorized cutting element has mechanical means to create a cut in the anterior capsule tissue along a planned capsulorhexis line, said mechanical means tear small fragments of the anterior capsule in a fashion that may be similar to either a saw, a rotating chipping bit, a continuous hole puncher or a combination of those mechanical means thereby, creating a relatively smooth cut without the risk of undesired capsular tear.

An apparatus for teaching and practicing an ophthalmologic surgical technique of creating the continuous curvilinear capsulorhexis comprises a housing with a first base end and a second suction cup end for holding a malleable body; a flexible film or cellophane-type membrane covers the operating area of the malleable body; this flexible film can be held into place on the first base end with a first cap with an aperture or opening; in between the first base end and the second suction cup end, there can be a flexible stock with a threaded or friction connection. There can also be a second cap addition, which simulates a cornea and anterior chamber, which can be filled with viscoelastic material, which can increase the pressure in the eye and flattens the anterior capsule.

A one-piece capsulorhexis device is presented comprising a membrane having a curved, flexible substantially discoid flap-valve member shaped to align with an ocular lens capsular bag inner surface, and at least one integral, flexible retainer shaped to align with an ocular lens capsular bag outer surface.

The invention relates to the field of medical health, and discloses a pair of capsulorhexis forceps used through a micro incision. The CCC is a key step in the process of a cataract phacoemulsification operation, and needs to be accomplished through the capsulorhexis forceps. At present, a pair of capsulorhexis forceps frequently used clinically can be opened and closed in a left-and-right mode so that only when the requirement that an incision is large enough is met, the capsulorhexis forceps can be fully opened. The pair of capsulorhexis forceps used through the micro incision comprises a forceps handle, a forceps neck and forceps tips, wherein the forceps handle is a front and rear piece press fit type handle, the forceps neck is of a structure with an upper piece and a lower piece, and the front end of the forceps neck is downwards bent to form the front forceps tip and the rear forceps tip. In the process of using the pair of capsulorhexis forceps, front-and-rear opening and closing movement of the forceps handle drives the upper piece and the lower piece of the forceps neck to carry out front-and-rear relative movement, then the front forceps tip and the rear forceps tip can carry out front-and-rear opening and closing movement, and the clamping motion and the release motion are achieved. The pair of capsulorhexis forceps can smoothly enter into an eye through the micro incision, operation is convenient, and daily maintenance is easy.

A method of manufacturing an intraocular lens inside a capsular bag after the natural lens has been removed employs a sealing device comprising a plug part adapted to seal a rhexis in a capsular bag, thus preventing displacement through the rhexis of a lens-forming liquid material injected through the rhexis and adapted to replace the natural lens and form an intraocular lens implant. The plug part has a slightly larger area than the capsulorhexis and is made of a deformable polymer. The sealing device comprises an adjusting means connected to the plug part, the adjusting means having the function of positioning the plug part to a desired location.

A capsulorhexis electrode device and a corresponding insertion tool are disclosed. A flexible capsulhexis electrode assembly comprising an elastomeric ring, first and second conductive traces disposed on a first face of the elastomeric ring and extending concentrically around the elastomeric ring, and first and second conductive Connector. First and second conductive connectors are electrically connected to the first and second traces, respectively, and are disposed at opposite positions across the elastomeric ring. The insertion tool includes first and second stretch rods having connectors for mating with the electrode assembly. One of the stretch rods translates relative to the other, thereby elongating the flexible electrode device for insertion through a small incision into the anterior chamber of the eye.

The invention discloses a capsulectomy and capsulorhexis integrated device for a cataract surgery. The capsulectomy and capsulorhexis integrated device comprises an upper connecting middle rod and a lower connecting middle rod. Connecting holes are formed in the surfaces of the upper connecting middle rod and the lower connecting middle rod. A rotating transverse rod is arranged between the upperconnecting middle rod and the lower connecting middle rod. A through hole is formed in the surface of the rotating transverse rod. A connecting pin shaft penetrating through the through hole is inserted in the connecting holes. The outer side of the rotating transverse rod is connected with a fine capsulectomy device through a fine tuning capsulectomy structure. The inner sides of both the upper connecting middle rod and the lower connecting middle rod are connected with a hook-shaped gentle capsulorhexis device through an arced adjusting structure. The capsulectomy and capsulorhexis integrated device adopts integrated design, so that the capsulectomy device and the capsulorhexis device are combined together, and the cataract surgery can be conducted more smoothly; meanwhile, the capsulectomy and capsulorhexis integrated device changes the capsulorhexis mode of the capsulorhexis device, thus a capsulorhexis incision can be smoother and flatter, and the capsulorhexis quality is better;and in addition, the capsulectomy and capsulorhexis integrated device can further enable the capsulectomy and capsulorhexis processes to be more gentle, and thus the surgery effect is better.

The invention discloses an ultrasonic capsulorhexis needle for cataract suction, which comprises a metal connector and a needle body. The metal connector and the needle body are of a split structure; the needle body is connected to the rear of the metal connector; the metal connector is fixedly connected to the far end of an ultrasonic emulsification handle; and the furthest end of the needle body is the tip end. The ultrasonic capsulorhexis needle has the beneficial effects that weaknesses of burning a capsule by an electrode are avoided; by the tip end of the capsulorhexis needle which is driven ultrasonically, a lens capsule bag can be more effectively and softly torn; and moreover, the ultrasonic frequency can be flexibly reduced and even not started according to conditions and only the conventional step of manually tearing the capsule is adopted, so that great flexibility is brought to a doctor. According to the ultrasonic capsulorhexis needle for cataract suction, the pressure applied to eyes in the process of tearing the capsule can be reduced, the capsulorhexis process is easier to operate, safety is improved, and the ultrasonic capsulorhexis needle is particularly further required by patients suffering from special conditions, such as cataract patients of which ciliary suspensory ligaments are weak, extra-hard or excessively soft.

The invention belongs to the field of medical apparatuses, and in particular relates to a pair of capsulorhexis forceps. The capsulorhexis forceps comprise a forceps handle which is composed of a handheld section and a clamping section. The forceps handle is of a hollow structure. The capsulorhexis forceps further comprise an auxiliary rod with a plurality of sharp bumps. The auxiliary rod is accommodated in the hollow forceps handle and stretches out of or shrinks in the accommodating space of the forceps handle through a through hole in the tip of the clamping section; and the sharp bumps are vertically fixed or formed on the auxiliary rod. By means of the auxiliary rod and the sharp bumps arranged on the auxiliary rod, a boundary of a capsula pedal needed can be formed on the surface ofthe crystal capsula smoothly, and the capsula pedal is obtained smoothly, so that a very good basis is created for follow-up CCC. The operating difficulty and risk are reduced, the success rate of CCC is improved, and furthermore, the operating quality and safety are improved.